Jump to content
Ultimaker Community of 3D Printing Experts
danidore

Ultimaker 2, don't work exactly right

Recommended Posts

Hei there,

I have some problems but i can't figure out what is wrong with this printer; the thing is it basically works fine but almost always skips steps (the little extrusion engine in the back makes that annoying squeak sound and goes back a little).

I manage to do some excelent prints but with a lot of effort, 5-10 tryouts, and the thing I wish to fix the most is speed; I can only print decent stuff at speeds of 50% or bellow (and it takes a lifetime).

Most problems appears when the resolution is over 150 microns... Bellow that 100 or 60 works a little bit better.

I noticed that ABS is almost impossible to control, especially on bigger objects; I use mostly PLA bought from Ultimaker so the material shouldn't be a problem (I tested other materials and they really suck). To make something acceptable I set the nozzle temperature for PLA at 235-240 degrees so the process of skipping steps won't let gaps in the prints but I don't think is ok...

I'm almost sure that something is wrong with it but I don't know what. Can someone give me some pieces of advice? I can run some tests, I can upload pictures, I can give you the parameters...

Share this post


Link to post
Share on other sites

This sounds like under extrusion problem; The teflon part deforms, making it harder to push material through the nozzle. This is why the problem occurs at thicker layers and higher speeds, as it needs to push more mm3 per second.

Replacing the teflon inset should help greatly (Recent machines should have a spare one with it).

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Our picks

    • Print Core CC | Red for Ruby
      Q: For some users, abrasive materials may be a new subject matter. Can you explain what it is that makes a material abrasive when you are not sure which print core to use?
      A: Materials which are hard in a solid piece (like metals, ceramics and carbon fibers) will generally also wear down the nozzle. In general one should assume...
      • 1 reply
    • "Back To The Future" using Generative Design & Investment Casting
      Designing for light-weight parts is becoming more important, and I’m a firm believer in the need to produce lighter weight, less over-engineered parts for the future. This is for sustainability reasons because we need to be using less raw materials and, in things like transportation, it impacts the energy usage of the product during it’s service life.
        • Like
      • 12 replies
×

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!